I while ago I ran a very short project with some year 9 students where they had to choose any object from a pile of prepared cuttings and images as well as toys and other small items the only had only 10 minutes to create a grouping before I took a photo to create a picture these are just two of the results.
They were not given any theme or title to work to, only shown some of peter blakes work, and the idea of creating something from popular images were shown.
the students really enjoyed the experience. I could see that it completely broke down the barriers to being creative. as their thoughts were based around having fun, making something that they liked, from things that were popular and provided. these are just a couple of the results picked at random.